Vapor-burner.



W. M. SHEPHERD.

VAPOR BURNER.

APPLICATION FILED JUNE 2, 1910.

1,036,353, Patented Aug. 20, 1912.

UNFFEIQ STATEE PATENT @FFfQE.

WILLIAM M. SHEPHERD, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GILBERTT. SUTTERLY AND GEORGE H. SUTTERLY, OF PHILADELPHIA, PENNSYLVANIA.

VAPOR-BURNER.

Application filed Jane 2, 1910.

To all whom it may concern Be it known that 1, WILLIAM M. SHEP- rmnn, acitizen of the United States, residing in Philadelphia, Pennsylvania,have invented certain Improvements in Vapor- Bnrners, of which thefollowing is a speci fication.

My invention relates to improvements in vapor lamps or burners of thegeneral type shown in the patent of G. T. Sutterly, No. 820,151, datedMay S, 1906, and its object is to provide a convenient, eflicient andsafe construction of such a lamp or burner.

In the accompanying drawings, Figure 1 is a sectional perspective viewof an alcohol lamp constituting one embodiment of my invention; Fig, 2,is a side elevation of the burner tube and regulating sleeve, the fontcover being partially shown in section; Fig. 3, is a detached plan viewof the regulating sleeve; Fig. 4, is a detached broken View, partly insection, of portion of the operating shaft; and Fig. 5, is a perspectiveview of the collar which serves as a guide for the regulator.

1 represents the font of the alcohol lamp, having the cover 2 securedthereon in suitable manner. Mounted upon, and preferably secured to thebottom of the font is the burner tube a, which projects above the neckportion 3 of the font cover, said projecting portion being provided withthe usual burner openings 5, a cap 6, and openings 7 at or near thebottom of the tube for admission of alcohol to the wick of asbestos orsimilar material within the tube. Surrounding the burner tube is theregulating shutter 8 comprising two tubular sleeves 9 and 10, one fixedwithin the other, the inner sleeve 9 closely fitting the burner tube andthe outer sleeve 10 being of a sutliciently larger diameter to leave anannular space between the two as shown. If desired a collar 17 may besecured within the font cover to serve as a guide for the regulator. Anysuitable means for securing the regulator tubes one within the other,and properly spacing them apart, may be employec. In the presentinstance, as shown in Fig. 3, the outer tube 10, at its lower portionhas been crimped upon the inner tube. The regulator is adapted to beraised and lowered by means of the pinion 11 fixed to the end of theoperating shaft 12, said pinion 11 en Specification of Letters Patent.

Patented Au so, 1912.

Serial No. 564,582.

gaging with the series of openings 13 in the outer tube 10. The shaft 12turns in the sleeve or bushing 16 passing through the wall of the fontand held in position in any suitable manner. The coiled spring 1 t, setin the socket 15 in the shaft bears against the sleeve 16 (see Fig. 4C),forming a friction device for holding the shaft 12 against rotation whenthe latter is not desired. When the shutter is in its lowermostposition, as shown in full lines, in Fig. 2, all of the burner openings5 are exposed; when the shutter is in its uppermost position, as shownin Fig. 1, the inner'sleeve 9 engages with the flange of the cap 6,completely closing the burner tubeopenings and cutting off the flame,but the flange of the cap is not, of sufficient diameter to cover thespace between the sleeves While the lamp is burning the font is filledwith heated vapor or gas, and in lamps heretofore constructed, upon theclosing of the shutter such heated vapor has escaped around the outsideof the shutter at the neck of the font cover and has frequently ignitedand as the heating of the parts consequent upon such ignition hascontinued the production of vapor within the font, the lamp hascontinued to burn at the neck of the font-cover, notwithstanding thecomplete closing of the shutter. It is to overcome this objection and toprovide a vent for the font at all times that I have provided thedouble-tube shutter as heretofore described. The outer tube 10 isprovided with a series of holes 18 preferably so located that when theshutter is fully closed said holes 18 will be within the neck of thefont-cover and serve at that point to admit the vapor remaining withinthe font to the annular space between tubes 9 and 10, whence it escapesto the open air about the cap 6. If before the flame at the burneropenings is fully extinguished the vapor issuing from the space aboutthe cap shall ignite, it will quickly burn away as the flame at thatpoint will not cause such heating of the parts within the font as tocontinue the generation of vapor.

affording communication between the interior of the font and the openair, and

burner openings, the outer sleeve of the regulating shutter beingprovided With perforations.

3. In a vapor lamp, in combination with the font and the burner tube, aregulating shutter comprising inner and outer sleeves spaced apart,means for raising the shutter to extinguish the lamp, the outer sleeveof said shutter being provided With perforations so located as to bringthem to the upper part of the font When the shutter is fully raised,

4. In a vapor lamp the combination of a font, a burner tube, a cap onsaid burner tube, a regulating shutter surrounding said burner andadapted when raised to project from the interior of the font, saidshutter comprising inner and outer sleeves spaced apart, the innerdiameter of the outer sleeve being greater than the diameter of theburner tube cap, and means for raising the shutter to cause the innersleeve thereof to abut against said cap. I

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing Witnesses.

WILLIAM M. SHEPHERD. WVitnesses CHARLES H. HoWsoN, WM. A. BARR.

Copies 01' this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

